“I would ask all members of the public to be vigilant, as both commercial and private properties can be used for the production of cannabis.

“Signs to look out for are covered over windows or curtains constantly closed, people visiting properties at odd times, for example to water plants, extractor fans in walls and a sweet, distinctive herbal smell.

“If you witness any such suspicious activity please email information to 101@sussex.pnn.police.uk or call 101.”